The following updates has been released for Debian 7 LTS:

[DLA 908-1] chicken security update
[DLA 909-1] libcroco security update
[DLA 910-1] libreoffice security update

[DLA 908-1] chicken security update

Package : chicken
Version : 4.7.0-1+deb7u2
CVE ID : CVE-2017-6949
Debian Bug : 858057

It was found that CHICKEN did not sanitize the size argument when
allocating SRFI-4 vectors, which could lead to segfaults or buffer
overflows with some sizes.

For Debian 7 "Wheezy", these problems have been fixed in version
4.7.0-1+deb7u2.

We recommend that you upgrade your chicken packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

[DLA 909-1] libcroco security update

Package : libcroco
Version : 0.6.6-2+deb7u1
CVE ID : CVE-2017-7960 CVE-2017-7961
Debian Bug : 860961

CVE-2017-7960

A heap-based buffer over-read vulnerability could be triggered
remotely via a crafted CSS file to cause a denial of service.

CVE-2017-7961

An "outside the range of representable values of type long"
undefined behavior issue was found in libcroco, which might
allow remote attackers to cause a denial of service (application
crash) or possibly have unspecified other impact via a crafted
CSS file.

For Debian 7 "Wheezy", these problems have been fixed in version
0.6.6-2+deb7u1.

We recommend that you upgrade your libcroco packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

[DLA 910-1] libreoffice security update

Package : libreoffice
Version : 1:3.5.4+dfsg2-0+deb7u9
CVE ID : CVE-2017-3157 CVE-2017-7870

CVE-2017-3157

Ben Hayak discovered that objects embedded in Writer and Calc
documents may result in information disclosure. Please see
https://www.libreoffice.org/about-us/security/advisories/cve-2017-3157/
for additional information.

CVE-2017-7870

An out-of-bounds write caused by a heap-based buffer overflow was
found in the Polygon class.

For Debian 7 "Wheezy", these problems have been fixed in version
1:3.5.4+dfsg2-0+deb7u9.

We recommend that you upgrade your libreoffice packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS